body {
    padding-top: 80px;
    padding-bottom: 40px;
    background-color: #eee;
}

.form-signin {
    max-width: 330px;
    padding: 15px;
    margin: 0 auto;
}

.form-signin .form-signin-heading,
.form-signin .checkbox {
    margin-bottom: 10px;
}

.form-signin-heading {
    text-align: center;
}

.form-signin .checkbox {
    font-weight: normal;
}

.checkbox-signup {
    float: right;
    margin-right:10px;
}

.checkbox-remember-me {
    margin-left: 10px;
}

.form-signin .form-control {
    position: relative;
    height: auto;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    padding: 10px;
    font-size: 16px;
}

.form-signin .form-control:focus {
    z-index: 5;
}

.form-signin input[sign="username"] {
    margin-bottom: -1px;
    border-bottom-right-radius: 0;
    border-bottom-left-radius: 0;
}

.form-signin input[type="password"] {
    margin-bottom: -1px;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

.form-signin input[sign="captcha"] {
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}

.form-signin span[type="captchaholder"] {
    border-top-right-radius: 0;
    border-bottom-left-radius: 0;
    padding: 2px;
}

/*错误提示信息*/
.error_msg{
    color:red;
    padding:5px 0px;
}